Recently I bought a Logitech transporter. I have a oppo 980 connected to it as a transport. I tried a Siltech silver cable (coax) and a Van den Hul optocoupler (toslink)as interconnects. I couln't hear any differences whatsoever between to two of them. The rest of my system consists of Mark levinson 336 and B&W n802, so resolution should be good enough.